R(t), r(t D), r(t 2d) p(t), p(t D), p(t 2d)

请输入您的数学问题…… R(t), R(t-d), R(t-2d) P(t), P(t-d), P(t-2d)

问题

R (t), R (t - d), R (t - 2 d) P (t), P (t - d), P (t - 2 d)

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